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With the rapid developing of synthetic aperture radar (SAR) in recent year, multi-channel receive technology is widely applying in wide-swatch SAR, high resolution SAR, GMTI, InSAR, multi-band and multi-polarization SAR. In this paper, have a deeply discussion on equalizing between channels in wideband multi-receive aperture system when amplitude imbalance and phase non-uniform. Take a three receive...
SAR raw data rate is one of most important limiting factor of spaceborne SAR system, in this paper, a design method of SAR raw data real-time compression system based on FPGA is discussed in detail, which adopts Block Adaptive Quantization (BAQ) algorithm. By using less hardware logic resource, SAR raw data rate is reduced, and performance of this real-time compression system is enhanced greatly....
Linear frequency modulated (LFM) signal is widely used in radar duo to its good characteristic. Aimed at transmitted waveform design of SAR system, a scheme of the wide-band LFM signal based on DDS technique is presented in this paper. Some factors affecting its compressed performance are also discussed. Finally, experiments results show that the proposed scheme is available.
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